Stair platform and landing



STAIR PLATFORM AND LANDING Filed Feb. 13, 1922 2 Sheets-Sheet 1 A. J. HALL STAIR PLATFORM AND LANDING Filed Feb. 15, 1.922 2 Sheets-Sheet 2 names Dee. is, tans.

UNHTEID) STATES Warn earner eerie-e.

AKOS VT- L, 0F CLEVELAND, OHIO.

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Application filed February 13, 1922. Serial No. 636,266. I

' slots in the beam. 4. The lugs are bent- To all whom it may concern:

Be it known that 1, Aims J. HALL, a citizen of the United States, residing at the city of Cleveland, county of Cuyahoga, State ofOhio, have invented new'and useful Improvements in Stair Platforms and Landings, of which the following is a speci* fication.

This invention relates to an improvement in stair platforms and landings and the object is to produce a landing of sheet metal frame work, which may be assembled without employing bolts or rivets thereby eliminating the excessive cost of labor and materials. Upon the flooring a covering of cement or concrete is applied.

The invention consists of certain novel features of construction and combination of parts which will be hereinafter described and set forth in the claims.

In the accompanying drawings:

Figure 1 is a top plan view;

Figure 2 is a transverse-vertical sectional view;

Figure 3\ is a perspective view in elevation and section showing the manner of connecting the stifl'ener beam to a wall member and cross beam; 1

Figure 4' is a detailperspective view showing the manner of attaching the cross beam to one of the wall members; and

Figure 5 is through a portion of the cross beam, and showing "a stiffener beam. and wall member in section; and Figure 6 is a detail sectional view.

The platform and its supporting structure are preferably made of sheet metal and 1 represents the channel beam and 2-2 represents the side channel beams which are connected to the back channel beam 1.

The longitudinal edges of the channel beams 1 and 2- are received in the plastered portion of the wall. The back or rear channel beam 1 is fastened to the side beams 2 by lugs 3 passing through slots in the; side beams and bent against the walls thereof. A til-shaped channel cross beam 4 is located at the head of the lower stair way 5 and at the foot of the upper stairway 6. At the ends of the channel beam 4 suitable anchoring means 7 are provided for holding the beam in the wall of the building. The side beams 2 are cut away at their ends to receive the ends of the cross beam 4, and are provided with lugs 8 which pass through a longitudinal sectional view against the inner wall of the beam 4 for fastening the two beams together;

A plurality of- U-shaped channel beams 9 are 1 and the cross channel beam 4.

stiffener The beams 9 are provided with lugs 10, 10,

at their ends, a lug being formed on each of the three walls thereof. These lugs 10 extend through openings 11 in the inner'wall located between the rear beam of the beam 4 and are bent against the inner surface of the inner wall for locking or fastening the stiffener beams 9 to the cross beam 4. The stiffener beams 9 are connected to the rear beam 1 in the same manner by having the lugs 10 passing through slots or 1 openings 12 formed in the back beam 1 and the lugs are of the beam. 1 for attaching the beams 1 and 9 togethei'. In this manner the beams 1 and 4 are securely rigid structure is produced. The upper edges of the beams 9 are bent inwardly in a horizontal plane forming flanges 13, and the cross beam 4 has its upper edges bent in a bent against the inner surface connected together and a like manner for forming horizontal flanges 14. The flanges 13 and 14'of the beams 9 and 4 forming a support for the metal plat- 1 form 15.

The rear beam 1 and the side beams 2 are provided with "lon itudinal recesses or grooves 16 and 17. he lower portions of the grooves or recesses 16 and 17 are preferably made flat for forming a support for the edges of the metal platform 15 which are received in the grooves. Suitable angle clips 18 are attached by means of bolts 19 to the beams 1 and 2 for holding the metal platform in the grooves.

' A further attaching means is provided for fastening the platform 15 against movement by lips 20 which are struck up from plates 26 attached to the flanges 13 and 14 of the beams 9 and 4. These lips 20 passing through openings or holes 21 formed in the platform 15. The lips 20 are bent down against the upper face of the platform 15 for locking the platform against movement.

A newel post 22 is provided with a recess 23 adapted to fit about the cross beam 4. The post 22 is attached and held against movement to the beam 4 by means of a pin Q4 which passes through the .wallof th beam 4 and into the post. I

After the several beams and platform have been assembled cement or concrete 25 may be tion of a rear and applied to the platform and which is of sufiicient depth to conceal the grooves 16 and 17 and .in fact these grooves forum an anchor for the cement. The cement is also poured into the hollow cross beam 4 reinforcing rods 26' are embedded in the concrete in the hollow beam 4.

' After the concrete has been introduced into the hollow beam 4 and over the upper I 15 are concealed and can not be tampered with.

Having described my invention what I claim as new and Patent is: Y

1. In a metal stair platform, the combination of a rear and side beams having longitudinal grooves therein, a cross beam located between. the side beams, and a metal platform received in and supported by the grooves of the rear and side beams.

2. In a metal stair platform, the combination of'a channel beam and a cross beam, stiffener beams connecting said beams together, and a metal landing supported by said beams, said channel beam being provided with a longitudinal groove for receiving the edge of the platform for forming a support therefor.

3. In a metal stair platform, the combinaside beams having longitudinal grooves therein, a cross beam located between the side beams, a metal platform received in and supported by the grooves of the rear and side beams, and means onthe desire to secure by Letters rear and side beams for holding the plat.

form in position.

4. In a metal stair platform, the combination of a rear; channel beam and a cross beam arranged parallel therewith, said beams having s ots formed therein, stiffening beams interposed between said channel beam and cross beam and provided with lugs at the ends thereof which lugs extend through the slots of said beams and are bent against the and suitable invent? sides of the beams for fastening the stifiener beams thereto, a landing platform supported by said beam, said channel beam being provided with a longitudinal groove for supporting an edge of said platform, and means attached to said channel beam for engaging the platform forholding it against movement. Li 5. In a metal stair platform, the combination of a channel beam and a cross beam arranged parallel thereto, stiffener beams interposed between said channel beam and cross beam and attached thereto, alanding platform supported by said beams and having a plurality of slots, and lips on the stiffening beams projecting through the slots of the platform and bent over and against the upper surface of the platform for fastening the platform in position.

6. In a metal platform, the combination of a channel beam and a cross beam arranged parallel thereto, stifl'ener beams interposed between said channel beam and cross beam and attached thereto, a landing platform supported by said beams and having a plurality of slots, lips on the stiffening beams projecting thru the'slots of the platform and bent over and against the upper surface of the platform for fastening the platform in position, and clips carried by the channel beam for engaging and holding the platform in position. v

' 7. In a sheet metal stair platform, the combination of a channel beam having a longitudinal groove therein and a U-shaped cross beam arranged parallel to the channel beam, stiffening beams interposed between the channel beam and cross beam, means, for connecting the stiffening beams to the channel beam and cross beam, a platform supported by the cross beam and stiffening beams and having an edge thereof received in the groove of the channel beam, means for attaching the platform to the stiffening beams, and a covering of plastic material received on said platform and inthe hollow cross beam.

AKOS J.

Bill 

